GRANDES TAXONES DE FITOBENTOS Y SU RELACIÓN CON LA HIDROLOGÍA, FÍSICA Y QUÍMICA DE PEQUEÑOS RÍOS ANDINOS
In 16 sampling points, which were located in 14 streams of the middle and high basin of the Bogotá River (2.617 - 2.988 m), we analyzed some physical, chemical and hydrological variables and the benthic algae community (taxonomic classes). By means of Principal Component Analysis, we concluded that...
| Autor Principal: | Rivera Rondón, Carlos Alberto; Unidad de Ecología y Sistemática, Departamento de Biología, Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá |
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| Otros Autores: | Díaz Quirós, Catherina; Unidad de Ecología y Sistemática, Departamento de Biología, Facultad de Ciencias. Pontificia Universidad Javeriana, Bogotá |
| Formato: | info:eu-repo/semantics/article |
| Idioma: | eng |
| Publicado: |
Pontificia Universidad Javeriana
2004
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| Materias: | |
| Acceso en línea: |
http://revistas.javeriana.edu.co/index.php/scientarium/article/view/5027 |
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| Sumario: |
In 16 sampling points, which were located in 14 streams of the middle and high basin of the Bogotá River (2.617 - 2.988 m), we analyzed some physical, chemical and hydrological variables and the benthic algae community (taxonomic classes). By means of Principal Component Analysis, we concluded that the rivers respond to a basin area gradient and mineralization gradient. The streams are of the acidic order 1-4, and their flow rates are lower than 3.7 m3 s-1. The total nitrogen and total phosphorus concentrations are lower than 7 mg l-1 and 1.4 mg l-1, respectively. The benthic community is dominated by diatoms, cyanobacteria and green algae. The basin area and mineralization gradients determine the dominant and co-dominant benthic algae class per stream. |
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